This inventor holds 11 USPTO granted patents and 7 published patent applications. Top assignees: Cisco Technology, Inc., Acacia Technology, Inc.. Active years: 2025-2026.
Company Filing History:
8 out of 21,339 
2 out of 22 Years Active: 2025-2026
Title: Long Chen: Innovator in Photonic Technologies
Introduction
Long Chen is a prominent inventor based in Marlboro, NJ (US), known for his contributions to the field of photonic technologies. With a total of 11 patents to his name, Chen has made significant advancements in the design and functionality of photodiodes and optical waveguides.
Latest Patents
One of Chen's latest patents is for an integrated germanium photodiode with self-aligned implant and electrical contact. This innovative photodiode device features a base layer with a first intermediately doped region and a heavily doped region. It includes a dielectric layer, a light absorptive material, and multiple electrodes, all designed to enhance the efficiency and performance of the photodiode. Another notable patent involves optical waveguide terminators with doped waveguides. This invention provides methods and structures for effectively terminating unused waveguide ports in planar photonic integrated circuits, significantly reducing stray light and reflections.
Career Highlights
Throughout his career, Long Chen has worked with leading technology companies, including Cisco Technology, Inc. and Acacia Technology, Inc. His experience in these organizations has allowed him to refine his skills and contribute to cutting-edge innovations in photonics.
Collaborations
Chen has collaborated with notable colleagues such as Qianfan Xu and Jonathan Edgar Roth, further enhancing his work in the field of photonic technologies.
Conclusion
Long Chen's innovative contributions to photonic technologies, particularly in the areas of photodiodes and optical waveguides, highlight his role as a significant inventor in the industry. His work continues to influence advancements in this critical field.